Hydraulic sizing-machine.



PATENTED DEC. 3

- L. G. GRAUPNER.

HYDRAULIC SIZING MACHINE.

' APPLIQATION IILBD APR. 1, 1907.

2 SHEETS-SHEET 1.

A T101625 Y.

WITNESSES.

TERS co. wAsHmaraN, n '1 PATENTED DEG. $1907.

L. G. GRAUPNER.- HYDRAULIC SIZING MACHINE 2 SHBBTS-SHEHT 2.

APPLICATION FILED APR. I 1907.

INVENTOR: lax/Z15 a 694x 1 ATTORNEY v WITNESSES:

THE uanms PETERS 50., wnsmuuron. n. c.

' device applied to a mortar.

LOUIS C. GRAUPNER, OF SAN FRANCISCO, CALIFORNIA.

HYDRAULIC SIZING-MACHINE.

Specification of Letters Patent.

Patented Dec.3, 1907.

Application filed April 1. 1907. Serial No- 365.785-

' To all whom it may concern:

Be it known that I, LOUIS C. 'GRAUPNER, citizen of United States, residing at the city and county of San Francisco and State of California, have invented new and useful Improvements in Hydraulic Sizing-Machines, of which the following is a specification.

My invention relates to an apparatus for sizing and classifying crushed quartz, rock and sand, and is especially applicable to ores containing precious and valuable metals.

It consists in a combination of mechanism, and in details of construction which will be more fully explained by reference to the accompanying drawings, in which I Figure 1 is a plan view; Fig. 2 is a vertical section; and Fig. 3 a front elevation of the Fig. 4 is a detail view of the valve. Fig. 5 is a plan. Fig. 6 is a front view, and Fig. 7 is a cross section of the device applied to a rotary crusher. Fig. 8 is a perspective view of a gate section.

This invention relates to certain improvements in screens or devices for the grading, screening and classifying of ores and the like, by a combination of adjustable spacing gates and hydraulic separation, and it is applicable to any apparatus by which crushing or pulverizing may be done, such as stamp, roller, or other crushing mills. Its object is to provide a more rapid and more perfect separation of the fine particles of sand from the coarser particles without the use of wire cloth or punched screens.

In the operation of grading or separating such material with wire cloth, punched, or other types of fixed screens as commonly used, there is much difficulty encountered by reason of the screens clogging, and also being broken by'the impact of the large particles of ore thrown violently against them, by being e ected or thrown outward by the impact of the crushing means.

In Figs. 5 to 7, I have shown my device as applied to a rotary or centrifugal crusher of any suitable description where the rotation takes place around a vertical axis. In these drawings, A represents a section of the peripheral screen and settling chamber of the mill, and in these sections are set gates 2 with such a distance between that when closed together, as shown in Fig. 1, each gate overlaps the next contiguous one, and they thus form a wall which is capable of being opened or closed. These gates are pivoted and turnable about vertical axes as at 3, and the face of each of the gates is formed with channels, as shown at 4; thus when the gates are closed to overlap, one end of the set of channels is presented inwardly, and all material which is crushed small enough will enter and pass through these channels. These small channels conduct the materials which enter them into the settling chamber 5, where the heavier and coarser particles are settled to the bottom and delivered through a gate or valve 6 into the return port 7 for the over-sized material. This port connects with the interior of the pan, mortar, or other crusher, and material which has thus settled to the bottom will be returned back to the mortar for further crushing. These channeled gates may be opened about their pivots to enlarge the discharge openings to any re quired extent. The material thus admitted lies in the settling chamber, with the coarsest opening 9 made along one side, corresponding with the width of' the settling chamber. When this opening is at the top, the finest material held is suspension will constantly be raised so'as to pass into the opening and flow off through the valve as fast as the supply entering from the crushing chamber causes it to rise. By rotating these discharge valves so that the passage or opening 9 iscarried around toward the lower side, the depth to which this passage is submerged within the pulp and solution will control the coarseness of the material discharged, this material increasing in coarseness as the discharge port is further submerged until it is turned so as to be at the bottom of the valve, where the coarsest of the material to be discharged will escape. The heavier portion, as' previously described, settles to the bottom, and is passed to the return port .7 by means of the valve or gate 6. This cylindrical gate is cut away on one side of its axis of rotation so that it is in the form of a segment. When turned so that the flat side, which is substantially radial to the axis of the valve, is in a position to stand transversely across the discharge opening, the latter will be closed, the diameter of the valve or gate being of such size as to substantially fill the discharge opening. By rotating the in which receptacle the coarser material setvalve and turning the flat side to a more I nearly flat position, the opening will be made large enough to discharge any material which has been allowed to enter the settling cha1nher through the gates 2. Thus, as the material constantly enters the settling chamber, the coarser material will be returned into the crusher, while the grading and accumulation of the finer material and water constantly raises the fine material held in suspension to the discharge valve.

In order to assist the coarsest settled material to pass to the discharge opening, I have made the floor of the settling chamber inclined as shown at 10.

The gates and settling chambers when used in a circular crushing device may be made is sections with the floors inclining from the center to the ends, so that the heavier settled material will be constantly carried to the oversize return ports and gates, and in the case of a mortar the incline will be from the center toward each side, the length of the section being dependent upon the number of stamps in each mortar.

Having thus described my invention, what I claimand desire to secure by Letters Patent is 1. In a sizing and separating apparatus, the combination of a settling receptacle, said receptacle having a wall adapted to connect with the interior of a grinder, an overflow valve connected with the upper part of the receptacle through which pulp held in suspension in the upper part of said receptacle may be classified and delivered, said wall comprising adjustable gates arranged in overlapping order and having channels connecting with the interior of the receptacle, and an over-size valve in the low er part of the receptacle, said receptacle having a return port for returning the coarser material to thegrinder.

2. In a hydraulic sizing and separating apparatus, the combination of a settling receptacle, adjustable screen gates forming a wall of said receptacle and arranged in overlapping order, said gates having channelsconnecting with the chamber of the receptacle, turnably mounted valves or gates connecting with the upper part of the receptacle, and an adjustable over-size return valve in the lower part of the receptacle, said receptacle having a port controlled by said valve and adapted to return the coarser material to the grinder.

3. In a separating and classifying apparatus, the combination of a receptacle adapted to connect with a grinder and having a wall separating its interior from the interior of the grinder, said wall composed of turnable gates arranged in overlapping order and having channels connecting the interior of the grinder with the interior of the receptacle,

tles, said receptacle having a return port adapted to connect with the grinder, means for regulating the overflow from the receptacle and a valve controlling the return port of said receptacle.

4. A settling, separating and sizing receptacle adapted to be connected with a grinder, said receptacle having an inclined bottom and a chamber in which the material settles, a series of overlapping valves forming the wall of the receptacle between the settling chamber thereof and the grinder, said gates having channels in their faces forming a connection between the grinder and the settling chamber of the receptacle, means for discharging the finer graded material from near the surface of the material in the settling chamber, and means by which the over-size coarser material may be returned from the settling chamber to the grinder.

5. The combination in a separator and classifier of a settling receptacle having a separating and sizing chamber wherein grading of the material is accomplished, a screen forming a wall of said chamber, said screen being composed of pivotally mounted plates arranged in overlapping order and having channels leading the material into said chamber, and adjustable discharge gates or valves for the fine and coarse materials respectively.

6. The combination with a receptacle in which material may be graded, of a screen controlling the entrance to said receptacle, said screen being formed of a series of plates turnably mounted and arranged in overlapping order and having channels in their faces lea 'ng into the chamber of said receptacle.

7. In an apparatus of the character described, the combination of a receptacle having a settling chamber, horizontally adjustable gates connecting therewith and turnable about vertical pivots and having slots or channels in their inner faces, said gates forming a connecting wall between the chamber of said receptacle and the interior of a grinder, and a hollow turnable valve mounted in the receptacle and having an opening adjustable with relation to the surface of the contained material to regulate the size of the discharge material.

8. In an apparatus of the character described, the combination of a receptacle having a settling chamber, revoluble gates forming a wall between the interior of said receptacle and a grinder, said gates having channels leading from the grinder to the interior of the receptacle and said gates capable of being brought to any height within the radius of the chamber of the gate, for the purpose of classifying the material held in suspension to be discharged, said receptacle having a port through which coarse material may be returned to the grinder.

9. In an apparatus of the character described, the combination of a receptacle having a settling chamber, adjustable gates mounted in said receptacle and adapted to form a wall between the interior thereof and the grinder, said gates having channels which connect the grinder with the interior of the receptacle, an over-size return gate in the lower part of the chamber adapted to regulate the size of the material to be returned, said receptacle having a port through which said material may be returned to the grinder, and said return gate adapted to maintain the surface of the material in the sizing and settling chamber of the receptacle at.a fixed height, and a discharge valve for material held in suspension, said valve being adjustable with relation to the upper surface of the pulp.

10. In an apparatus for separating and classifying ores, the combination of a receptacle adapted to connect with the. chamber of a grinder, said receptacle having a settling chamber, gates forming a wall of said receptacle and turnable upon vertical axes and adapted to overlap each other when closed, and having grooves or channels made in their faces through which material may pass to the chamber of the receptacle, said receptacle having a return port connecting the bottom of the settling chamber with the grinder, gates or valves by which the size of the return material, and the level of the pulp in the settling chamber, are regulated, a hollow cylindrical discharge gatelocated near the surface of the pulp having an opening or channel in one side, said gate being turnable to present the opening at any point within its diameter to slze the material which is being discharged.

In testimony whereof I have hereunto set 'my hand in presence of two subscribing Witnesses.

. LOUIS Q. GRAUPNER.

Witnesses:

M. D. MALTMAY, P. J. KENNEDY. 

